Republicans face off in S. Carolina; Dems battle in Nevada

COLUMBIA, S.C.: Republicans are facing off in South Carolina’s presidential primary, a contest that could determine Donald Trump’s strength as a front-runner and help clarify whether a more mainstream politician will ever emerge to challenge him.
Democrats are holding a caucus Saturday in Nevada, the first test for Hillary Clinton and Bernie Sanders in a more racially diverse state. While Clinton’s campaign once saw the Western battleground as an opportunity to start pulling away from Sanders, her team is nervously anticipating a close contest with the Vermont senator.
For both parties, the 2016 election has revealed deep voter frustration with Washington and the influence of big money in the American political system. The public mood has upended the usual political order, leaving more traditional candidates scrambling to find their footing.